Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9828771 | Boom assembly joints | Mark E. Barker, Richard E. Humpal | 2017-11-28 |
| 9258989 | Boom assembly joints | Mark E. Barker, Richard A. Humpal | 2016-02-16 |
| 8746589 | Boom assembly joints | Mark E. Barker, Richard A. Humpal | 2014-06-10 |